Networks in economic development
综述网络经济学研究对经济发展的启示，聚焦信息流动和风险分担两个主题，区分信息扩散与聚合模型，分析非正式保险的摩擦及政策干预的意外后果，提供实用见解。
Abstract This chapter surveys the implications of some studies in network economics research for economic development. We focus on information flow and risk-sharing—two topics where work in theory, empirics, and policy analysis have been especially intensive and complementary. In analysing information, we distinguish models of information diffusion and aggregation, highlight how different models imply very different guidance regarding the right way to seed information. In discussing risk-sharing, we look at the key frictions that impede efficient informal insurance, and some potential unintended consequences when policymakers intervene to help. Throughout, we stress practical insights that can be used with limited measurement of the details of networks.